noun

complication

difficulty, problem, medical issue

There was a complication with the plan.

There was a complication with the plan.

He developed a complication after the surgery.

He developed a complication after the surgery.

a complication ((with sth.)) a problem that makes a situation more difficult There was a complication with the plan.

a medical complication an unexpected medical problem He developed a complication after the surgery.

Synonyms: difficulty, problem, obstacle; Antonyms: solution, simplification

From Latin 'complicare' (to fold together). Same root as 'complicated'.

A 'complication' is a problem that 'folds' into an existing situation, making it more complex.

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